[b7] Inspection code display of secondary unit (only for central controller to display this code)
82
No
No
No
No
No
[b5] External input display, [b6] external interlocking display
Whether the
connector CN1 is connected to the
external equipment
Check indoor PCB, if improper,replace it
Yes
Whether the
external equipment can normally act
Check external equipment, if improper,replace it
Check the reason of action
Whether it runs in group
Check indoor PCB, if improper,replace it
Yes
Check whether
there is inspection code on the secondary
unit (No.2~16 unit) with master (slave)
remote controller
No
Yes
Check indoor unit group, outdoor unit
[b9] Indoor pressure sensor circuit
Whether the
connection and wiring of the connectors
of indoor pressure sensor CN23 are
normal
Modify the connection and wiring ofthe connectors
Yes
Yes
Whether the
pressure characteristic of indoor
pressure sensor is normal
Replace the sensor having fault
Check indoor PCB, if improper,replace it
Yes
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